How many chromosomes do human cells have?

An organism's reproductive cells, sperm and egg cells, are called _____.

Chromosomes that are organized in pairs, are the same size, and have the same genes are called _______ chromosomes.

Body cells that contain both sets of chromosomes (from both parents) are called _________.

How many chromosomes do we get from each parent?

A version or variation of a gene

The alleles that an organism has

The observable expression of a characteristic

When an organism has two of the same alleles, it is called

When an organism has two different alleles, it is called

This type of allele is expressed whether there are one or two copies present.

These types of alleles are only expressed if the organism has two copies

An SS fly could be described as (Check all that apply.)

An Ss fly could be described as (Check all that apply.)

An ss fly could be described as (Check all that apply.)

The genotype Aa is best described as

The genotype gg is best described as

In pea plants, purple flowers (P) are dominant to white flowers (p). The phenotype of a PP plant would be

In pea plants, purple flowers (P) are dominant to white flowers (p). The phenotype of a pp plant would be

In pea plants, purple flowers (P) are dominant to white flowers (p). The phenotype of a Pp plant would be